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A tragic two-vehicle collision occurred north of Saskatoon this past weekend. Catherine Loye McKay, 49, has been charged by RCMP with three counts of impaired operation of a motor vehicle causing death in connection with the fatal crash.

At around 12:30 a.m. CT on Jan. 3, members of Warman RCMP came across the collision at the intersection of Highway 11 and Wanuskewin Road.

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Investigators determined that a westbound car on Highway 11 was struck by a northbound Jeep attempting to cross the highway on Wanuskewin Road. RCMP said the driver of the Jeep failed to stop at a stop sign.

Emergency services arrived on scene to find two vehicles in the ditch on the north side of the highway.

The car had four occupants, a family of four, all of whom were from Saskatoon. The two adults, a 33-year-old woman and a 34-year-old male driver, were pronounced dead at the scene.

Two children were taken to hospital in Saskatoon, including a two-year-old boy who later succumbed to his injuries. His sister Kamryn Van de Vorst, 5, succumbed to her injuries Monday morning.

WATCH: Little boy among 3 killed in Highway 11 crash

According to court documents, the accused is charged with causing the deaths of Jordan Van de Vorst, Chanda Van de Vorst and Miguire Van de Vorst while her ability to operate a motor vehicle was impaired by alcohol. Warman RCMP say further charges in this matter are pending.

The 49-year-old driver of the Jeep was taken to hospital, released after examination and then arrested. She is expected to be back in Saskatoon provincial court Thursday morning.